Successful management of hydrallantois in a Standardbred mare at term resulting in the birth of a live foal

Mitchell, Anna R.M., Delvescovo, Barbara, Tse, May, Crouch, Esther E., Cheong, Soon Hon, Castillo, Juan M., Felippe, M. Julia B., Ainsworth, Dorothy M., and De Amorim, Mariana Diel (2019) Successful management of hydrallantois in a Standardbred mare at term resulting in the birth of a live foal. Canadian Veterinary Journal, 60 (5). pp. 495-501.

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Abstract

A 6-year-old Standardbred mare was presented at 339 days of gestation for investigation of abnormal abdominal distension and ventral edema. Transrectal palpation and ultrasound examination revealed the uterus to be enlatged with an excessive volume of fetal fluid, characteristic of hydrops. Gradual transcervical drainage of 55 L of allantoic fluid over 45 minutes, with concurrent intravenous fluid therapy followed by assisted vaginal delivery, resulted in the birth of a live foal with long-term survival. The birth and long-term survival of a foal from a mare with hydrallantois at term has not been previously reported in horses. However, this report demonstrates that successful outcome for both mare and foal may be achieved in a mare at term with hydrallantois.

Item ID: 92161
Item Type: Article (Research - C1)
ISSN: 0008-5286
Copyright Information: © Canadian Veterinary Medical Association.
Date Deposited: 09 Jun 2026 03:54
FoR Codes: 30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3009 Veterinary sciences > 300907 Veterinary medicine (excl. urology) @ 80%
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3009 Veterinary sciences > 300910 Veterinary pathology @ 20%
SEO Codes: 20 HEALTH > 2099 Other health > 209999 Other health not elsewhere classified @ 100%
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